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2004-06-16, 18:10
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#1 |
Jun 2003
The Texas Hill Country
21018 Posts |
The factorsof 10,223+ . c201 are p73 * p129
On behalf of the NFSNET Factoring Group, I am happy to announce that I found this on the screen of my G5 when I returned from lunch today.
Thanks to all of the sievers without whose efforts I would not have had the data to process. This completes the last factorization in the backlog caused by the difficulty in processing 2,811-. Richard Factorization completed after 8885.90 seconds, at Wed Jun 16 12:45:15 2004 Original number had 201 digits: 49758958437064365183341105213640385746985551202121 \ 66813670942463408462643068413592597393991165322720 \ 51367234127695381400591250742929694843555904520509 \ 603702962028539798720834254409924410330623440892183 Probable prime factor 1 has 129 digits: 25309322317097404277807835737102129793277608545288 \ 59196338893269457315069679673863428510642087796964 \ 17921593338374442943683661653 Probable prime factor 2 has 73 digits: 19660328243340718436487382367169221415674590893901 \ 54109618864643162638011 Last fiddled with by Jeff Gilchrist on 2004-06-16 at 18:14 |
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2004-06-16, 20:58
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#2 | |
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Bamboozled!
"πΊππ·π·π"
May 2003
Down not across
10,753 Posts |
Quote:
 What Wacky didn't reveal is that he had done all of the post-processing for this number with his own resources and, in particular, the linear algebra was performed on his G5 Mac and not on the MSR cluster which has been used for all previous NFSNET factorizations. It took him a while but it demonstrates that heavy iron is not strictly necessary for front-line factorizations --- but patience is.  Paul |
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